A cylindrical item in which the inner or outer ring turns upon row(s) of hardened ball, bearing which roll on a raceway, thus minimizing friction. These items are characterized by their noncorrosive qualities, lightness of weight, inch dimensions rather than metric, inner rings generally projecting beyond the faces of the outer ring, or a very narrow width inner ring having an outside diameter slightly larger than the bore diameter. Designed primarily for use in aircraft assemblies, such as control systems and surfaces of aircraft. Excludes:bearing,ball,annular.
0.3075 inches minimum and 0.3125 inches maximum inner ring width, contact bearing seal type, radial load direction, 0.3745 inches minimum and 0.3750 inches maximum bore diameter, mil-g-23827 mil spec single material response lubrication material document and classification